脈沖電容器質(zhì)量試驗(yàn)及元件參數(shù)

　　介紹了在一定電壓、電流值和反峰電壓下的充放電試驗(yàn)方法，并經(jīng)過深入分析歸納出設(shè)計(jì)電路中L，R元件參數(shù)的公式，為測試某型號脈沖電容器的質(zhì)量及工作可靠性提供了依據(jù)。實(shí)驗(yàn)要求脈沖電容器充電電壓10 kV，放電電流4 kA，重復(fù)頻率可調(diào)6~10 s/次，測試5 000次。充電電源采用恒流充，具有速度快，效率高，對電容損傷小等優(yōu)點(diǎn)，開關(guān)采用高壓真空接觸器;智能控制器采用FPGA控制，具有控制靈活，穩(wěn)定性高，測量精度高等優(yōu)點(diǎn)。放電回路是在RLC二階電路欠阻尼狀態(tài)下進(jìn)行的。通過仿真，驗(yàn)證了元件參數(shù)設(shè)計(jì)正確。

　　Abstract:

　　For testing the capacitor’s quality and work reliability of a certain type of pulse，this paper introduces a charge-discharge experimental method in certain voltage， current and reverse peak voltage， and through in-depth analysis the text concludes a series of formulas for designing the component parameter of R and L in the circuit. Experimental requirements that the pulse capacitor recharging voltage is 10kV， its discharge current is 4kA， its repeatition frequency is adjustable for 6~10 seconds/time， and required 5 000 cycles tests. The charging power adopts constant-current filling， which has the advantages of high speed， high efficiency， little injury for capacitance. The switch adopts vacuum contactor switch. The intelligent controller adopts FPGA controlling， which has the advantages of vivid control，high stability，and high measuring accuracy and so on. The discharge circuit is under the condition of RLC second-order circuit. Through simulation， it proves that the design of component parameter is correct.